ABSTRACT : A field trail was conducted during rainy season at crop research farm Allahabad agriculture institute (Deemed university) to evaluate the effect of different levels of nitrogen on growth and yield attributes of different varieties of Basmati Rice (Oryza Sativa L.). The varieties which was evaluated were Haryana Basmati-1 , Basmati -370 and Pusa basmati -1 under three different fertility levels viz; 100 , 120 and 140 the combinations was replicated three times in factorial 3² (RBD). The varietal trial indicates that Pusa Basmati- 1 at nitrogen -120 level was significantly different from all the parameters measured which include plant height number of tillers/hill , dry weight , length of panicle , number of filled grains / panicle , straw yield , biological yield , harvest index, benefit cost ratio and grain yield of 4.66 tonnes / hectare at level nitrogen level-120 , 3.10 tons / hectare at nitrogen level -120 were maximum and minimum in Pusa basmati -1 and Basmati -370 respectively .